Rotary teeter



June 17, 1930.

VE. H. TAYLoR ROTARY TEE TER Filed Dec. 1, '1927 1 1 A. 1 11 1 nl. M 1.11.; 11 .I

Patented June 17, 1930 UNITED# STA-TESS EWING'HORAGEAT-AYLOR, OF BEAUMONT, TEXAS ROTARY TEET'ER Application 'med December 1,` 1927: `serial 116.437,089.

This invention @relates to# rotary' teeters and is a continuation in art of-myA application Serial No. 141,805, led-October 15th, 1926. v

An important object ofthe'invention is to pro'videanovel form of teeter includ# ing a trackvvay having a seriesl of undulations providing alternate high and 4 low por-- tions and adapted to effect a teetering-ac-v tion of the'teeterboard, lthevlatterbeing rotatably f supported in' lsuch -a' manner that the 'teetering action effects r rotation thereof about a vertical axis;

A further object is to' rovide yadevice of the above mentioned c aracterv wherein the lteeter board is provided with novel :rollermeans adapted'to contactfvvith the track- Way 'insucha manner'- as toreduce friction between the 1rollersand trackwa I to permit the *device* to be operated with` I little ef# fort.

A further objectvis ".to'lprovide a trackway extendingV vertically from a:- prefer'ablyi inA tegra`l= ba'se fand constitutingttherewith a lubricantlcontainer into which a portionof each rollerfis adaptedlto dip to bef provided with lubricant as-ithe teeterV4 board rotates;

A further object" is'sto` provide al novel form" of roller `having f la central peripheral groove to 'receive `the trackw'ay and Iinner and outerguide 'fiangegthefinner fiange being of' material f depth@ to permitit to 'dipinto `'thef lubricant container vto be1 supplied with lubricant therefrom as the` roller! passes over 'each Vlowpoint offithe' tra'ckway.

A further obj ect" is* to"` provide? .aI novel casing for'the operating-.elements of the device to fpreventinjuryl therefrom While the device is'inoperation. i

Other' 1 objects and*` advantages of the invention will i become i apparent during the course ofthe' following description'.

In the'drawings' have shown one embodiment of the* invention'.v In thisV show:-

1n 5 j gFigurel is lacentral vertical longitudinal sectional view, parts` being shown in. elevation, j

Figure' 2 isV asec'tion online 2?'-2 of Figure'l, partsfbeinglshown in elevation,

Figure" 3"is a `plany View off the track-L WSJYS Y Figure 45 is a detail Isectional `vievv of'one o'fltheirollers and supporting means therefor, and, v l 'Y lFigure 5-is` a detailwvievvho'ftheflprotectl ing casing. f

Referring to the drawings the( numeral 10 designatesfa preferablyv tubular pedestal mounted upon `aA f base 1-1 which f may"- be secured on any1 supporting'surface"inany Ide siredrmanner. A trackvvayv indicated-as-la Whole -by the numeral L 12 is arrangedat Lthe upperend of-theipedestal- As'ishoW-n, the member 1,2 is provided-vvith'fal baseil'and a i depending iiange 14'; -wvhich may-bef threaded on` the' up'per'A end ofthe' pedestal 110,--a's shown inf-Figure y1. Th'eftrackwayfproper comprises'` a f plur alitjf of undulationsi prvidingf alternatehigh -andlo'vv-p 1 in'tsl l5 v andI-,LaS'FShGWn injFigures 11'aud-l3.ov4 The low -Ypoints-E of the trackvvay aref jpreferably arranged zii-substantial distance abovethe base portion Y 13 l Wherebyfthe trac'kvvay= coi? rOperates Withthe latter element totrl provide the corresponding bearings 27. Each roller is adapted to rotate upon its shaft 28 and to partake of sliding movement thereon. Each roller is provided with a central peripheral groove 32 which is adapted to roll upon the undulations of the trackway. This groove forms inner and outer annular flanges 33 and 34 respectively, the flange 33 being of substantially greater diameter than the groove 32, for a purpose to be described. r

Means is provided for protecting persons using the device from being injured by the operating parts thereof. Cleats 35 may be secured against the sides of the teeter board centrally thereof, or the board may be made wider at these points. A casing 36 is arranged beneath the central portion of the teeter board and is provided on opposite sides with upward projections 37 having openings 38 therein to receive nails or screws by means of which the casing may be secured against the cleats 35. The casing 36 is suiiiciently wide to clear the-sides of the operating elements of the device as shown in Figure 2, and is elongated longitudinally of the teeter board to permit the latter to oscillate about the axis of the shaft 2l without the casing striking the pedestal l0 or other parts of the apparatus.

The operation of the device will be apparent from the foregoing description. Vertical oscillation of the teeter board causes the rollers 30 and 3l to travel from the low to the high points of the trackway undulations, and vice versa, thus causing the board to rotate about the axis of the shaft 19. Thus the board will be caused to rotate about a vertical axis and oscillate about a horizontal axis. The use of grooved rollers which are adapted to partake of radial sliding movement with respect to the vertical axis of rotation permits the rollers to alter their positions according to the distances from the axis of the shaft 21 to the points of contact between the rollers and the trackway, and the friction between these elements is materially reduced, thus permitting the device to be operated with very little effort. As previously stated, the trackway constitutes a lubricant container, and a body of lubricant may be maintained therein to the level of the low points of the undulations. Thus each ytime one of the rollers passes over the low points of the trackway, the inner flange 33 thereof will pick up lubricant and supply it to the contacting surfaces of the roller and the trackway. The use of an inner flange of materially greater diameter than the trackway receiving groove permits a greater quantity of lubricant to be picked up by each roller. A relatively heavy lubricating oil or grease is employed, and with the construction described, the quantityy of lubricant is sufficient for use over along period of time. The casing 36 forms a complete protection against injury to persons using the device, by the moving parts thereof. 'The casing lits snugly against the sides of the teeter board while the upper edges of the curved ends of the casing lit against the bottom of the board. The casing is relatively narrow in width, and is elongated longitudinally of the teeter board and transversely of the horizontal axis of oscillation, thus permitting the board to oscillate freely without causing the protecting casing to come into contact with any of the other parts of theapparatus.

It is to be understood that the form of the invention herewith shown and described is to be taken as a preferred example of the same and that various changes in the shape, size and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the subjoined claims.

Having thus described my invention, I claim: 1

l. A device of the character described comprising a support provided with a series of undulations forming a trackway, a teeter board mounted abovesaid trackway and supported to rotate about a vertical axis by said support, said board being adapted to partake of oscillation about a horizontal axis, and a pair of rollers carried by said boardand adapted to engage said trackway, said support constituting a lubricant container into which portions of said rollers are adapted to dip.-

2. A device of the character described comprising a trackway including a horizontal'base portion and an upstanding circular side wall having undulations at its upper edge, a teeter board, means for supporting said board on said base portion for rotation about a vertical axis and oscillation about a horizontal axis, the low points of said side wall being arranged above said base portion whereby said trackway constitutes a lubricant container, and a pair of rollerscarried by said teeter board and engaging said undulations, each of said rollers having a portion adapted to dip into said lubricant container.

3. A device of 4the character described comprising a trackway including a horizontal base portion and an upstanding circularv side wall having undulations atl its upper edge, a lteeter board, -means for supporting said board on said base portion for rotation about a vertical axis and oscillation about a horizontalaxis, the low points of said side wall being arranged above said base portion whereby said trackway constitutes a lubricant container, and a pair of grooved roller mounted beneath said board for rotationl and radial sliding movement with respect to their axes, each of said rollers being provided on its inner side with an annular flange adapted to dip into said container.

4. A device of the character described comprising a trackway including a horizontal base portion and an upstanding circular side wall having undulatons at its upper edge, a teeter board, means for supporting said board on said base portion for rotation about a vertical axis and oscillation about a horizontal axis, the low points ofA said side wall being arranged above said base portion whereby said trackway constitutes a lubricant container, a pair of shafts carried by said teeter board above diametrically opposite portions of said undulations, and a grooved roller rotatabl and slidably mounted on each of said sha s and engaging said undulations, each of said rollers being provided at its inner side with an annular flange of materially greater diameter than the grooved portion thereof and adapted to dip into said container.

5. A device of the character described comprising a trackway provided with a series of undulations, a teeter board mounted above said trackway to rotate about a vertical axis and to oscillate about a horizontal axis, a pair of rollers carried by said board and adapted to engage said undulations, and a protecting casing carried by said board and extending downwardly to surround said trackway and said rollers, said casing being substantially equal in width to said board and longitudinally elongated with respect thereto, whereby oscillation of said board will not be prevented by the sides of said casing.

In testimony whereof I aix my signa- EWING HORACE TAYLOR.

\. ture. 

